Cash register



H. W. CLARK Nov. 9, 1937.

CASH REGISTER Filed March 2, 1936 3 Sheets-Sheet l Nov. 9, 1937.

H. W. CLARK CASH REGISTER Filed March 2, 1936 5 Sheets-Sheet 2 nKU gnmcmioc H. W. CLARK CASH REGISTER Nov. 9, 1937.

Filed March 2, 1936 3 Sheets-Sheet 5 I" x, M

Patented Nov. 9, 1937 CASH REGISTER Harold W. Clark, Alliance, Ohio, assignor to The McCaskey Register Company, Alliance, Ohio, a corporation of Ohio Application March 2, 1936, Serial No. 66,620

7 Claims. (Cl. 23522) 10 An object of the improvement is to provide a character of Johantgen Patent No. 1,336,840 hav- 10 cash register provided with a drawer adapted to ing enforced registration means for selectively be opened by operation of the operating handle controlling the opening of the cash drawer and or similar means of the register in usual manner the credit drawer. and having means operated by a clerk or depart- The adding and listing mechanism is supported ment designating key normally rendering said upon a frame indicated generally at I 0 of usual 15 drawer opening means inoperative until said and ordinary construction, supporting the keydesignating key is depressed. board I l and enclosed as by the usual sheet metal Another object is to provide a multiple drawer housing !2. The keys are shown arranged in register provided either with multiple cash eight rows or banks, each row extending from :50 drawers or with cash and credit drawers adapted front to rear of the keyboard and the first six to be opened in the manner referred to, selective rows of keys on the right are numbered respecmeans being provided for rendering the drawer tively from I to 9. The seventh row, indicated opening means operative. at I3, is provided with suitable symbols desig- A further object of the improvement is to nating clerks or departments and the eighth row,

35 provide novel means for slidably supporting the indicated generally at M, may be provided with drawers in the machine, and for opening the suitable symbols indicating various items of drawers when the machine is properly operated. stock. Each key comprises a finger piece 15 and The above objects, together with others which a stem [5, the latter reciprocating through slots will be apparent from the drawings and following in the cover plate.

description, or which may be later pointed out, The keys may be depressed against the remay be attained by constructing the improved sistance of springs to cooperate with and deterregister in the manner illustrated in the accommine the movement of a series of rack bars, one panying drawings, in which for each row of keys, these rack bars being Figure 1 is a top plan view of a register emadapted to turn a set of accumulator wheels, the

bodying the invention, parts being broken away several keys determining the range of movement for the purpose of illustration; of the rack bars.

Fig. 2, a side elevation of the register on a As thus outlined, the adding and listing mechasmaller scale showing the register provided with nisrn is of a common and well known type, but as a cash drawer and a credit drawer, parts being to various features as hereinafter pointed out, it broken away to illustrate the interior mechapresents elements of novelty in structure and 40 nism; function. The usual operating handle I! is pro- Fig. 3, an enlarged fragmentary detail secvided for actuating the rack bars and other movo o e l able parts of the machine, and the usual prlnt- Fig. 4, an enlarged detail section on the line ing mechanism arranged to be set by means of "i5 the keys and operated by said handle.

Fig. 5, a fragmentary sectional elevation show- The operating handle is fixed upon the usual ing the usual dashpot and the manner in which rocker shaft is, upon which is also fixed the the improved mechanism is associated therewith; usual rocker arm [9 provided with the cam roller Fig. 6, a rear elevation of the improved register 26 for engagement in the flared cam notch 2| of to with parts broken away; the oscillating plate 22 pivoted at its upper end Fig. 7, a section on the line 'l'-1, Fig. 6; to the frame as at 23, all as in usual manner in Fig. 8, a section on the line 8-8, Fig. 6; adding machines of this general type. r Fig. 9, a section on the line 99, Fig. 6; The rocker shaft 24 journaled through the Fig. 10, a section on the line Ill-40, Fig. 6; frame H3 and provided with the rocker arm 25 is 5o 11, a detail elevation of the signalling link common to such machines. This rocker arm 25 The invention relates to cash registers and more particularly to a register provided with enforced registration mechanism requiring the operation of a clerk or department designating key to operate the drawer opening mechanism, and especially to a multiple drawer register which may be provided with two or more cash drawers or with cash and credit drawers with selective means for causing the opening of the drawers.

which controls the operation of the cash drawer; and

Fig. 12, a similar view of the signalling link which controls the operation of the credit drawer.

Similar numerals refer to similar parts 5 throughout the drawings.

The invention is illustrated as applied to a combined cash and credit register including an adding and listing mechanism of the general is ordinarily operatively connected to the oscillating plate 22 by means of a signalling link adapted to be set in different operative positions by the charge key 26, the total key 21 and the paid out key 23.

In carrying out the present improvement, two signalling links indicated generally at 29 and 36 (Fig. 2) are provided for operatively connecting the rocker arm 25 to the oscillating plate 22, the outer link 29 being adapted to be set in operative position by the paid out key 28 while the inner or rear signalling link 39 is adapted to be set in operative positions by the charge key 2% and the total key 21.

The signalling link 29 (Fig. 11) is pivotally connected at one end to the upper end of the rocker arm 25, as indicated at M, and the link 30 is similarly connected to an intermediate point of said rocker arm 25, as indicated at 32.

The link 29 has an enlargement 33 at its free end provided with an opening 31% preferably wider at its lower end, and having a notch 35 in its outer side edge at a point intermediate the top and bottom of the opening. A spring 36 is provided for normally pulling the link 29 upward so that the lower edge of the opening 34 engages the pin 3'! upon the oscillating plate 22.

The charge key 26 (Fig. 2) is provided with an angular lug 38 of sufiicient length to contact the upper edge of the link 30 and swing the same downward upon its pivot, when the key 26 is depressed. The total key 21 is provided with a stud 39 also of sufficient length to contact the upper edge of the link 30. An angular lug 40 is formed upon the paid out key 28 and is of sufficient length to contact the upper edge of the outer or front link 29.

An enlargement M is formed at the free end of the link 3! (Fig. 12) and provided with a substantially L-shaped opening 42 having an intermediate recess 43 therein. A spring M is pro vided for normally urging the link 30 upward so as to hold the lower edge of the opening 42 in contact with V the pin 3'! upon the oscillating plate. T

A rocker arm t5 (Fig. 2) is fixed upon the rocker shaft 24 and carries a stud 46 which engages in an arcuate slot M in the stop lever 38 which is pivoted at its upper end as at it upon the frame of the machine and provided at its lower end with a stop pin Bil, a spring 5! normally urging the lower end of said stop lever toward the rear end of the machine.

A rack bar 52 (Fig. 1) is slidably mounted upon the bottom plate 53 of the adding machine, being provided with elongated slots 54 slidably received upon the studs 55 carried by said bottom plate and provided with washers 56 for retaining the rack bar in position thereon. A spring 5'? is provided for normally urging the rack bar toward the front end of the adding machine.

An angular bar 58 is fixed upon the rack bar 52 and provided with a stud 59 adapted to engage the stop pin 58 upon the stop lever (is to ilimit the forward movement of the rack bar 52. As in usual practice, each bank of keys has associated therewith a link connected to a bell crank lever through which the type bars are operated, this link being allowed to move forward by the depression of any key in the corresponding bank.

These links are indicated at 56 (Fig. 6) and the lower arms of the bell crank levers are shown at 6! fulcrumed as at 62 upon the frame and pivotally connected as at 63 to the corresponding links. The link associated with, the bank I3 of clerks or department keys, has a stop flange or lug, which may be in the form of a yoke 65 fixed thereon for normally holding the locking lever 65 (Fig. l) in operative position.

This locking lever is pivoted as at 63 upon the frame and is provided at its free end with a notch 61 adapted to normally receive the locking stud 68 upon the bar 58. A spring 59 normally urges the locking lever 65 into position to release the locking stud 68 from the notch 6'? of the lever but in the normal position of the parts, the stop flange or yoke 66 engages the upturned angular flange l8 upon the locking lever 65 and holds the same in the locking position, as shown in Fig. 1. In order to take up any lost motion between the parts, a spring ll may be carried by the angular flange "iii of the locking lever for engagement with the stop flange or yoke 64.

The rack bar 52 is provided at its rear end with rack teeth #2 meshing with a pinion '83 (Fig. 8) fixed upon the sleeve M which is slidably keyed upon the vertical shaft which is journaled through the rear portion of the frame of the machine. The sleeve M may be keyed upon the shaft 755 as by the longitudinal slot 76 in the sleeve engaging the stud H in the shaft. The shaft '15 is mounted for vertical sliding move ment, as well as for rotation, in its journals.

The usual dashpot 78 (Fig. 5). is provided in the machine and pivotally connected in usual manner as at i9 to one arm of the bell crank yoke 83, the other arm of which is connected to the link 8! operated through the usual mechanism, in the direction of the arrow shown in Fig. 5, when the operating handle is pulled. This bell crank yoke is fulcrumed as at St upon a bracket 82 fixed upon the frame it and for the purpose of the present improvement has an arm 83 fixed thereon carrying a cam roller 8 t adapted to cooperate with the lifting lever 85 fulcrumed as at as upon the bracket 62.

The lifting lever 35 is provided at its rear end with the angular flange 86 located beneath the collar 87 upon the shaft 15 and adapted to be normally located beneath the cut-out portion 88 H of said collar as shown in Fig. 1, whereby raising of the lever 85 will permit the angular end 86 thereof to pass upward through said cut-out portion of the collar without moving the shaft is.

The apparatus illustrated is shown provided with a cash drawer 89 (Figs. 2 and 6) located beneath the adding and listing mechanism and a credit drawer 90 located beneath the cash drawer. These drawers are slidably mounted wit chassis indicated generally at 9! and 92 respectively and enclosed by housings 93 and 94 re spectively. A pull spring 95 is provided for normally urging the cash drawer to open position and a pull spring 96' is similarly provided for normally urging the credit drawer to open position.

For the purpose of normally holding the cash drawer in closed position, a latch bolt 9'! is vertically slidably mounted within a bracket 98 and normally urged downward as by the spring Hit, 1

into the recess 99, formed in a plate HIS extending across the rear upper portion of the drawer.

In the same manner, the credit drawer is normally held in closed position by the latch bolt Hi2 vertically slidably mounted in the bracket H 3 and normally urged downward into engagement with the'recess Hi l in the plate 505, by means of the spring W6.

A lifting bar I01 (Figs. 1 and 2) is pivoted as at I08 upon some stationary portion of the machine and located through .a notch I09 in the rear side of the latch bolt 91. It will be seen that by raising the free end of the lifting bar I01, the latch bolt 91 may be raised out of engagement with the recess 99 in the plate I of the cash drawer 89, permitting the spring 95 to open said drawer.

A similar lifting bar IIO (Figs. 2 and 9) is pivoted as at III upon some stationary portion of the machine and located through a notch H2 in the latch bolt I02, so that by raising the free end of the lifting bar III), the latch bolt I02 may be raised out of engagement with the recess I04 in the plate I of the credit drawer, permitting the spring 96 to open said drawer.

Collars or washers H3 and H4 (Fig. 6) are fixed upon the sleeve I4 above and below the pinion I3 to form a guide for the same upon the rack teeth I2. Just above the upper collar II 3 a collar H5 is fixed upon the shaft I5 as by the set screw H6 and provided with a lift finger III adapted to be moved to position beneath the free end of the lifting bar I01.

A similar collar H8 is fixed upon the lower portion of the shaft I5 as by the set screw H9 and provided with the lift finger I adapted to be moved into position beneath the free end of the lifting bar H0.

The drawers may be slidably mounted within the chassis frames in any suitable manner, the preferred construction being illustrated, in which the credit drawer 90 is mounted for horizontal sliding movement within the inverted U-shaped chassis frame members 92, by means of a series of channel members and rollers.

For this purpose a channel member I2I is fixed to the inner sides of the U-shaped chassis frames 92 at each side of the drawer 90. An oppositely disposed channel member I22 is telescoped over each channel member I2I and carries a roller I23 which rolls within the channel I2I. This channel I22 is connected to the downturned ends I050; (Fig. 3) of the plate I05 and to the forwardly disposed angular ends I24 of the bar I25 (Fig. 4) as by the bolt I26 upon which the roller I23 is journaled, and rides upon the roller I23 mounted on the chassis frame.

Rollers I2I (Fig. 3) are carried upon the outer sides of the channel I22 and received in a channel I28 fixed to each side of the drawer 90, thus slidably supporting the drawer upon said rollers. For the purpose of taking up any lost motion, the bar I25 has springs I29 fixed upon its rear side for engagement with the back wall of the housing when drawer is in closed position.

The spring 96 may be connected at its forward end to a stud I30 (Fig. 2) depending from the bar I3I spaced above the bottom wall of the housing as by the studs I32. The rear end of the spring 96 may be connected to the credit drawer catapult I33 which is slidably mounted upon the bar I3I and provided with the upturned angular flange I34 at its rear end for contacting with the rear of the credit drawer.

Stop members in the form of plates I35 may be spot welded or otherwise fixed to the rear end of the drawer 90 and depend below the bottom thereof for engagement with the frame portion i30 at the front of the credit drawer housing to prevent the drawer from being accidentally withdrawn entirely from the housing. A bumper I37 is fixed upon the bar I3I to limit the forward movement of the credit drawer catapult I33.

A cam bar I38 is fixed to each side of the chassis frame 92 and provided with the tapered forward and rear ends I39 and I40 respectively. A latch lever I M is pivoted as at I42 upon the side of the drawer and provided at its free end with a reduced extension I43 to which is connected one end of a pull spring I44, the other end thereof being connected to any suitable stationary point upon the drawer, being shown as connected to the rear end of the channel I28. A pin I45 is carried by the lever I4I near the free end thereof for contact with the inclined ends and lower edge of the cam bar I38.

A locking finger I46 depends from each side of the plate I05 and is. adapted to engage the free end of the latch lever I4I as shown in Fig. 2, the lower end of said finger being inclined forwardly and upwardly as at M! for a purpose to be later described.

A stop block 48 may be fixed upon each side of the credit drawer 90 just beyond the rear end of the channel I28 for engagement with the rearmost roller I2? as the drawer is opened. One or more stop pins I49 may be carried upon leaf springs I 50 fixed at their rear ends to the underside of the plate I05, said stop pins being adapted for engagement with the front frame portion I5I of the credit drawer housing.

For the purpose of slidably mounting the cash drawer within its housing, a channel I52 (Figs. 2 and 6) may be fixed to each side of the cash drawer 89 as well as to the depending flanges i00a. of the plate I00, said channel being arranged to roll upon rollers I53 carried by the chassis members SI. Rollers I54 are carried by the drawer 89 and adapted to roll in the channel members I55 fixed to the chassis members 9I.

A cash drawer catapult I55 (Fig. 2) is slidably mounted upon the bar 15! spaced above the bottom wall of the cash drawer housing as by the studs I 50, said catapult being provided with a bumper I59 for engagement with the rear end of the cash drawer. The spring 35 is connected at its forward end to a pin I50 depending from the bar I5! and at its rear end to the catapult I50. A stop block ISI is fixed upon the bar I57 to limit the forward movement of the catapult E55. Depending stop fingers I62 are provided at the rear end of the cash drawer 89 for engagement with the front portion I63 of the cash drawer housing to prevent accidental displacement of the cash drawer from the housing.

For the purpose of giving an audible signal whenever the cash drawer is opened, a gong I54 (F 6 and 10) is carried by the plate I00. A tapper IE5 is provided for this gong, in the form of a lever pivoted intermediate its ends upon the plate I00 as at I65, a spring I6! being provided for normally pulling said tappcr owe-rd the gong. In the normal position the tapper is held away from the gong, as shown in Fig. 10, by means of the pin I38 depending from the lifting bar I01.

In the operation of the machine, supposing a cash sale is made, the amount of the sale is set n in the machine depressing the proper n the first six banks to the right. If it is to make a record of the item sold, the J: er key in the bank I4 is also depressed.

It is necessary, in order to open the cash drawer 03, that one of the in the bank I3 of clerks or department keys should be depressed before the operating handle II' is pulled. Then, as the operating handle I! is pulled forward, the roller 2-0 carried by the rocker arm I9 will engage the cam notch 21! in the Oscillating plate 22, swinging said oscillating plate upon its pivot 23 and moving the pin 37 thereon into contact with the shoulder s id in the opening 35 of the signal lever 28, pulling said signal lever forward and tilting the rocker arm forward.

The rocker shaft 24 is thus oscillated, swinging the rocker arm upward, the pin it thereof swinging upwardly through the arcuate slot ll of the stop lever 48, swinging the lower end of said stop lever forward, and positioning the stop pin thereon a predetermined distance forward from the stud 59 upon the angular bar 53 carried by the rack bar 52.

. Since one of the keys in the bank l3 has been depressed, the corresponding link to will be allowed to move forward, as in usual practice, by the operation of the operating handle, and the stop flange or yoke 64 carried thereby will be moved away from the angular upturned end of the locking lever 55, permitting the spring 69 to swing said lever upon its pivot to a position releasing the locking stud 68 from the notch El of the lever whereby the spring 57 will pull the rack bar 52 forward until the stud 59 will again contact the stop pin During this operation of the rack bar the rack teeth l2 thereof cooperating with. the pinion l3 will rotate the shaft '55 to a position bringing the lift finger H'i beneath the free end of the lifting bar I01 and rotating the collar 8'? upon said shaft to such position that the cut-out portion 88 of said collar is not located above the an gular end 0f the lifting lever 35.

At the same time, through the forward movement of the operating handle, the link 8i will be pulled in the direction of the arrow shown in Fig. 5, as in the usual operation of the machine, swinging the bell crank yoke 88 upon its pivot Bil, the arm 83 carried by said yoke being moved rearward moving the cam roller 8 thereon into the notch 85a. in the underside of the lifting lever 85.

By this time the other parts of the mechanism will have assumed the positions just above described, whereupon further movement of the bell crank yoke 80 will cause the cam roller as to raise the lifting lever 85, the angular end 83 thereof engaging the collar 8i and slidably moving the shaft '95 upward.

The lift finger H'l having been positioned beneath the free end of the lifting bar ili'i, this upward movement of the shaft '55 will raise the lifting bar If]? and through the same will raise the latch bolt 91, against the pressure of the spring IiiI, out of engagement with the recess 99 in the plate Iiifi, releasing the cash drawer and permitting the spring 95, acting through the cash drawer catapult 556, to quickly slide the cash drawer into open position.

As the lifting bar i9] is raised to withdraw the latch bolt 9'! and release the cash drawer, the pin I68 carried by said lifting bar will be raised out of engagement with the end of the tapper I65, permitting the spring I 61 to cause the tapper to strike the gong a sharp blow, giving an audible signal that the cash drawer is being opened.

Assuming that the transaction requires money to be paid out from the cash drawer, the amount is set up on theproperkeys in the six banks at the right-hand side of the keyboard, the paid out key 28 is depressed to print Paid out on the record strip and one of the clerks or department keys in the bank I3 must also be depressed in order to open the cash drawer when the operating handle is'pulled.

The depression of the paid out key 28 will cause the angular lug 4!! thereon to push the outer signal link 29 down until the notch 35 thereof registers with the lower notch 42a of the opening 52 in the inner link 30. When the operating handle H is pulled, the pin 31 upon the oscillating plate 22 will engage the notch 35 of the outer signalling link 29.

The operation of the parts will be as above described for a cash sale. There will be a slight difference in the travel of the stop lever 48 and the position of the stop pin 5!] which will produce slightly less movement of the rack bar 52. However, the lift finger Ill will be positioned beneath the free end of the lifting bar I01 since it will be noted that, as shown in Fig. '7, the width of the lift finger II! is sufficient to position the same beneath the free end of the lifting bar.

If a charge transaction is made, the amount is set up on the proper keys in the six righthand banks of the keyboard,'the charge key 25 is depressed and a clerk or department key in the bank 93 must also be depressed in order that the credit drawer will be opened when the operating handle is pulled. By depressing the charge key 26, the inner signalling link 39 will be pushed down so that the upper notch 42b thereof 'will be engaged by the pin- 3'! of the oscillating plate. This will cause the stop pin 50 to be moved to such position as to permit sufficient movement of the rack bar 52 to rotate the shaft 15' sufficiently'to bring the lift finger I20 beneath the free end of the lifting bar IIU.

Thus, when the shaft 15 is raised by means of the lifting lever 85, the lift finger will raise the lifting bar I I0, pulling the latch bolt I02 out of the recess I84 of the plate Hi5, releasing the credit drawer and permitting the spring operated catapult I33 to'push the credit drawer open.

As the drawer moves toward open position, the pin M5 on the lever Mi will ride down the inclined end I40 of the cam bar I33 and onto the lower edge of said cam bar, releasing the lever MI from engagement with the finger Hi6, thus disconnecting the plate Ifi5 from the credit drawer so that as said drawer is pulled out to the fully opened position, the accounts at the rearmost end of the drawer will be accessible.

From the above it will be evident that neither the cash drawer nor credit drawer can be opened Without operating a clerks or department key in the bank I3, which in the usual manner will cause the clerks or department symbol to be printed upon the record strip, whereby enforced registration is assured.

I claim:

1. A register including an adding machine unit and a plurality of drawers associated therewith, means normally urging each drawer to open position, latch boltsnorrnally holding each drawer in closed position,a bank of clerk or department keys, operating means for the adding machine, normally inoperative latch bolt releasing means operable by said operating means, means released by any one of said clerk or department keys for rendering said. latch bolt releasing means operative, movable stop means for limiting the operation of said latch bolt releasing means, and selective means controlling the position of said stop means to selectively release a predetermined latch bolt.

'2. A register including an adding machine unit and a drawer associated therewith, means normally urging the drawer to open position, a latch bolt normally holding the drawer in closed position, a bank of clerk or department keys, operating means for the adding machine, a lifting lever operated by said operating means, a rotatable and longitudinally slidable shaft normally operatively disconnected from said lifting lever, a lift finger on said shaft normally inoperative to release said latch bolt, normally inoperative means for rotating said shaft, and means released by any one of said clerk or department keys for rendering said shaft rotating means operative whereby the shaft may be raised by said lifting lever and the lift finger may release said latch bolt.

3. A register including an adding machine unit and a drawer associated therewith, means normally urging the drawer to open position, a latch bolt normally holding the drawer in closed position, a bank of clerk or department keys, operating means for the adding machine, a lifting lever operated by said operating means, a rotatable and longitudinally slidable shaft normally operatively disconnected from said lifting lever, a lift finger on said shaft normally inoperative to release said latch bolt, normally inoperative rack and pinion means for rotating said shaft, and means released by any one of said clerk or department keys for rendering said rack and pinion means operative whereby the shaft may be raised by said lifting lever and the lift finger may release said latch bolt.

4. A register including an adding machine unit and a plurality of drawers associated therewith, means normally urging each drawer to open position, latch bolts normally holding each drawer in closed position, a bank of clerk or department keys, operating means for the adding machine, normally inoperative latch bolt releasing means operable by said operating means, means released by any one of said clerk or department keys for rendering said latch bolt releasing means operative, a movable stop lever for limiting the operation of said latch bolt releasing means, a phi-- rality of signalling links operatively connected to said stop lever, and selective means for operatively connecting a predetermined signalling link to the operating means for controlling the position of said stop lever to selectively release a predetermined latch bolt.

5. A register including an adding machine unit and a drawer associated therewith, means nor mally urging the drawer to open position, a latch bolt normally holding the drawer in closed position, a bank of clerk or department keys, operating means for the adding machine, a lifting lever operated by said operating means, a rotatable and longitudinally slidable shaft normally operatively disconnected from said lifting lever, a lift finger on said shaft normally inoperative to release said latch bolt, normally inoperative means for rotating said shaft, means released by any one of said clerk or department keys, means operated by the keys for rendering said shaft rotating means operative, and stop means operated by said operating means for limiting the movement of said shaft rotating means whereby the shaft may be raised by said lifting lever and the lift finger may release said latch bolt.

6. A register including an adding machine unit and a drawer associated therewith, means normally urging the drawer to open position, a latch bolt normally holding the drawer in closed position, a bank of clerk or department keys, operating means for the adding machine, a lifting lever operated by said operating means, a rotatable and longitudinally slidable shaft normally operatively disconnected from said lifting lever, a lift finger on said shaft normally inoperative to release said latch bolt, normally inoperative rack and pinion means for rotating said shaft, means released by any one of said clerk or department keys, for rendering said rack and pinion means operative,

and stop means operated by said operating means for limiting the movement of said rack and pinion means whereby the shaft may be raised by said lifting lever and the lift finger may release said latch bolt.

'7. A register including an adding machine unit and a plurality of drawers associated therewith, means normally urging each drawer to open posi tion, latch bolts normally holding each drawer in closed position, a bank of clerk or department keys, operating means for the adding machine, a lifting lever operated by said operating means, a rotatable and longitudinally slidable shaft normally operatively disconnected from said lifting lever, lift fingers on said shaft normally inoperative to release said latch bolts, normally inoperative means for rotating said shaft, means released by any one of said clerk or department keys for rendering said shaft rotating means operative, and selective means limiting the operation of said shaft rotating means whereby the shaft may be rotated to a predetermined position and may then be raised by said lifting lever to selectively cause one of said lift fingers to release one of said latch bolts.

HAROLD W. CLARK. 

